A model ship waits to begin a demonstration in the wave basin Friday at the Hydraulics Annex 2 in Coralville. The University of Iowa offered tours of its state-of-the-art wave basin facility, which features a 40x20x3-meter basin that accommodates model testing in an open body of water for critical analysis of naval vessel maneuverability and seaworthiness. (Geoff Stellfox/The Gazette)